Safety-gate for elevator-hatchways.



JOHN G. COLLIER, OF RUSSELTQN, PENN$YLVANIA.

SAFETY-GATE FOR EL vAron-HA'roHWAYs.

. To all whom it may concern:

Be it known that I, JOHN G. COLLIER, a citizen of the United States of America, residing at Russelton, in the county of Allegheny and State of Pennsylvania, have invented certain new and useful Improvements in Safety-Gates for Elevator-Hatchways, of which the following is a specification, reference being had therein to the accompanying drawing.

This invention relates to safety gates for elevator hatchways, more particularly mine hatchways, and has for its object to provide a gate of such class in a manner as hereinafter set forth, which is automatically unlocked when the elevator car or hoist reaches a platform or landing, so that access can be had to the elevator car or hoist.

Further objects of the invention are to provide a safety gate and its operating mechanism which is simple in its construction and arrangement,'strong, durable, eflicient in its use, readily set up, and comparatively inexpensive to manufacture.

With the foregoing and other objects in view, the invention consists of the novel construction, combination and arrangement of parts as hereinafter more specifically described and illustrated in the accompanying drawings, wherein is shown an embodiment of the invention, but it is to be understood that changes, variations and modifications can be resorted to which come within the scope of the claims hereunto appended.

In the drawings wherein like reference characters denote corresponding parts throughout the several views :Figure 1 is a top view illustrating the gate and the mechanism for unlocking the same, Fig. 2 is a front elevation, of the gate being locked, Fig. 3 is a vertical sectional view of a hatchway illustrating a portion of the unlocking mechanism'for the gate, and Fig. 4 is a perspective view illustrating the locked casing.

Referring to the drawings in detail, 5 denotes a landing, 6 a hatchway, and 7 and 8 a pair of vertical guides arranged at the landing and at opposite sides of the hatch way. The elevator car or hoist is indicated at 9.

Arranged within the landing are opposed fence posts 10 and 11 and opposed fence posts 12 and 13. The post 12 is parallel to the post 10 and the post 13 parallel to the post 11. The posts 12 and 13 are spaced Specification of Letters Patent.

- Application filed May 6, 1914. Serial No. 836,745.

I wardly when the shaft 27 is Patented Apr. 20, 1915.

from the posts 10 and 11 and hinged as at 141 to the post 12 is a gate 15, and hinged as at 16 to the post 13 is a gate 17 Arranged'in proximity to the inner side of the posts 10 and 11 is an upright 18 provided at the top of one side thereof with a casing 19 havinga hinged door 20, whereby access can be had to the interior of the easing. The outer side of the casing 19 is formed with a rectangular slot 21. The casings 19 extend parallel with the gates 15 and 17 when these latter are closed and the slots 21 in the casings 19 are provided for the entrance of fiat apertured keepers 22, which are carried by and project inwardly from the. gates 15 and 17 at the free sides thereof.

The guide 7 is provided with a recess 23 and an opening 24:, which communicates with said recess 23, and arranged within the recess 23 is a bow-shaped resilient shifting member 25, which has its ends slidably connected to coupling pins 26 therefor. The pins 26 are carried by the guides 7.

Arranged within the passageway which forms a landing, is an oppositely disposed rock shaft 27, provided centrally with a crank 28, which is formed with a longitudinal slot 29 and extending through the latter is a pin 30 carried by the end 31 of an actuating member 32, the latter extends through the opening 24 and is connected to the member 25, and surrounding the member 32 between the upright 7 and member 25 is a coiled spring 37. The member 25 projects in the path of the elevator car or hoist 9, whereby the said car or hoist 9 will ride against said member 25 to force the same inwardly in the recess 23, and such action of the member 25 will force the member 32 rearwardly with respect to said recess 23, and shift the crank 28, thereby rocking the shaft 27 against the action of the spring 37 and resilient shifting member 25.

The rock shaft 27 extends through the top of the uprights 18 and into the casing 19, and the ends of said rock shafts terminate in crank arms 38 provided with a depending end 39. The depending ends 39 extend into the apertured keepers 22 for the purpose of locking the gates 15 and 17 in closed position. The crank arms 38 are shifted upactuated due to the moving rearwardly of the actuating member 32 and when said crank arms 38 he. e ds. are moved are hif ed pwa dly,

whereby the gates out of the keepers 22 and 17 are unlocked.

What I claim is 1. A safety gate for, elevatorseomprising the combination with a gate provided with a vkeeper and a shaft having a crank arm formed I with a depending end engaging in said keeper 'combination'w th a hatchway, a swinging gate carried on the frame thereof and provided with a keeper, the frame of said hatch- Way having a recess at a predetermined point therein and a shaft having a crank connected .with the bulged V springand guided through the frame of said a coil spring encircling said arm gate locked of a resilient shifting member I comprising a bulgedleaf spring arranged in said recess ,inthepath of a hoist, the free ends of'sald spring being movably connected togthe frame of said hatchway toadmit of compression of said spring, a lateral arm portion of said hatchway, between said frame and the leaf spring to normallyr force thG'lflttGIztO itsextended position, and means operatively; connecting in the hatchway pass the leaf-spring. v

in the presence. ofi two witnesses.

Witnessesr MAX H. SGOLINLPZ, L. DUNN.

C'opies ofthis patent'may he obtained for five cents can .a y addre sin 45116 c m m Batent'sl washington lhfia i thebpposite end of said lateral= arm with said shaft to rock the latter asa hoist moves JOHN Groom-1BR: 

